Help Vray Crashes Every Single Time I Try To Render

[thomasj]

hello,

 

I spent weeks making this model, it ended up being 250 mb in size. Im using vray rhinoceros.

 

every time i try to render it crashes.

 

i cleaned the model up, i modified the cmd vista so memory runs on 3gb, and still nothing.

 

anyone know how to resolve this? thanks

Edited August 28, 2009 by thomasj

[Oleksandr Kramer]

Windows 32 bit has restriction on volume of used memory in 3 Gb.

Use Windows 64 bit.

 

Probably to you will help dinamic memory limit.

[Oleksandr Kramer]

I unfortunately do not work in Rhino, but I know precisely that in windows 32 bit there is a restriction on volume of used memory.

This restriction just in 3 Gb.

Absolutely not important how much you have RAM

It is a question of use of the maximum possible memory for 32bit programm.

It is RAM +Virtual memory.

 

Also it is frequent at my colleagues there are problems because of that that are present at a scene not Vray materials and objects without materials.

(It about 3dsMax, but I think, what is it concerns also any other programs)

Also sometimes with similar cases helps merge in a new scene.

[Tommy L]

Sounds like its running out of RAM.

Its a long time since i used Rhino models, b ut I remember them being heavy upon import. I think you can take several approaches to solving your problem.

1: Switch to 64bit. This is extreme to solve one issue, however, 32bit is becoming 'below standard' for vray and several other programs encountered every day with Arch-vis.

2: Optimize the model. 250mb seems large, but not unheard of, for a scene. Without knowing what ou are rendering its difficult to say if that number is too large. Whats the polycount? Whats the scene?

3: Optimize the render settings. Strip the setttings back, use an override (default vray material) no reflects, no blurred reflects etc etc. then add stuff back in order of priority until it crashes.

4: Incease page file size..more virtual ram, but slower...much slower)

5: 1+2=...RECOMMENDED!

[Tommy L]

Nope, its a fresh install or nothing. However, there may be a way to transfer your folder structure etc. Im no whizz with windows, Im the wrong guy to help you. However, if you have xp64 aqt your disposal and you're not using it, you are missing a trick! How much ram do you have in your machine?

[Thablanch]

Use Vrimg. format.

 

Turn off all the overhead:

 

- In the Max render size (or Rinho) , use something small like 30x20 pixels.

- In the Vray Tab, Enable Vray frame buffer, if not already done.

- Uncheck Render to memory frame buffer

- Uncheck get resolution from max ( Rinho)

- Check Vray raw image file and specify a path.

 

64 bits is the way to go, but usign Vrimg can get you out of mostly anything.

 

Hope it helps

[bmcgonigle]

You can install 64bit windows (vista or win7 at this point) in a dual boot to buy you some transition time. Requires a partition or another drive to avoid interfering with your current 32bit xp install.

 

You might also look into a rendering process that I was alerted to when I was recently having memory/crashing issues called strip rendering. I've not had a chance to delve into it more myself but its an option to explore.

[bmcgonigle]

Alain, can you explain a bit more about how to use vrimg? I tried google and all I really found were articles on how to use the converter, not how to use vrimg itself.

 

Also, could you give some more insight into this?

 

- In the Max render size (or Rinho) , use something small like 30x20 pixels.

 

Thanks

B

[Thablanch]

Alain, can you explain a bit more about how to use vrimg? I tried google and all I really found were articles on how to use the converter, not how to use vrimg itself.

 

Also, could you give some more insight into this?

 

- In the Max render size (or Rinho) , use something small like 30x20 pixels.

 

Thanks

B

 

The Vray Frame buffer creates the files, as it renders. Different channel can be stored in that file ( wich is not th point of this thread, but just as an info)

 

take a look at this link:

 

http://www.spot3d.com/vray/help/150SP1/vfb_index.html

 

When you are using the Vray frame buffer instead of the max one, the size can be controlled directly by Vray instead of 3dsMax. Max is still there, somewhere in the background, we just want to keep max resolution low, so overhead the minimum, that's all. I would use 30x20 pixels.

I will not use Max output, but the vrimg output, that you convert after as an .exr, as you seen in your readings, and open it in photoshop.

 

As mentionned before, turn off the overhead - see my previous post

 

And use the vrimg file

-Save the vrimg file from the Vray frame buffer ( see link)

-Convert the vrimg to .exr

-Open in photoshop

Edited August 19, 2009 by Thablanch

[bmcgonigle]

Excellent! Thanks for taking the time to elaborate on that.

 

B

[bmcgonigle]

Before you jump, maybe you can post a screen capture of the scene you are rendering along with your vray settings? Now that you have the correct os and memory it would seem that the problem may be with your model or settings. From what i know of rhino it can generate some very complicated models and thus cause rendering programs to drop to their knees. Have you tried rendering the scene with a global override material to see if its possibly a material causing the issue?